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cosmetics: line wrap and vertical alignment
[FFMpeg-mirror/lagarith.git] / libavformat / electronicarts.c
blobc680e494351c9d06628204dff4422011a2367367
1 /* Electronic Arts Multimedia File Demuxer
2 * Copyright (c) 2004 The ffmpeg Project
3 * Copyright (c) 2006-2008 Peter Ross
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file libavformat/electronicarts.c
24 * Electronic Arts Multimedia file demuxer (WVE/UV2/etc.)
25 * by Robin Kay (komadori at gekkou.co.uk)
26 */
27
28 #include "libavutil/intreadwrite.h"
29 #include "avformat.h"
30
31 #define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
32 #define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */
33 #define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */
34 #define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */
35 #define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */
36 #define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */
37 #define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */
38 #define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */
39 #define EACS_TAG MKTAG('E', 'A', 'C', 'S')
40 #define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */
41 #define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */
42 #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
43 #define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
44 #define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
45 #define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
46 #define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV i-frame */
47 #define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV p-frame */
48 #define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */
49 #define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD i-frame */
50 #define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG2 */
51 #define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ i-frame (appears in .TGQ files) */
52 #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ i-frame (appears in .UV files) */
53 #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 i-frame (.UV2/.WVE) */
54 #define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
55 #define MV0K_TAG MKTAG('M', 'V', '0', 'K')
56 #define MV0F_TAG MKTAG('M', 'V', '0', 'F')
57 #define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
58 #define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV i-frame */
59
60 typedef struct EaDemuxContext {
61 int big_endian;
62
63 enum CodecID video_codec;
64 AVRational time_base;
65 int width, height;
66 int video_stream_index;
67
68 enum CodecID audio_codec;
69 int audio_stream_index;
70 int audio_frame_counter;
71
72 int bytes;
73 int sample_rate;
74 int num_channels;
75 int num_samples;
76 } EaDemuxContext;
77
78 static uint32_t read_arbitary(ByteIOContext *pb) {
79 uint8_t size, byte;
80 int i;
81 uint32_t word;
82
83 size = get_byte(pb);
84
85 word = 0;
86 for (i = 0; i < size; i++) {
87 byte = get_byte(pb);
88 word <<= 8;
89 word |= byte;
90 }
91
92 return word;
93 }
94
95 /*
96 * Process PT/GSTR sound header
97 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
98 */
99 static int process_audio_header_elements(AVFormatContext *s)
100 {
101 int inHeader = 1;
102 EaDemuxContext *ea = s->priv_data;
103 ByteIOContext *pb = s->pb;
104 int compression_type = -1, revision = -1, revision2 = -1;
105
106 ea->bytes = 2;
107 ea->sample_rate = -1;
108 ea->num_channels = 1;
109
110 while (inHeader) {
111 int inSubheader;
112 uint8_t byte;
113 byte = get_byte(pb);
114
115 switch (byte) {
116 case 0xFD:
117 av_log (s, AV_LOG_DEBUG, "entered audio subheader\n");
118 inSubheader = 1;
119 while (inSubheader) {
120 uint8_t subbyte;
121 subbyte = get_byte(pb);
122
123 switch (subbyte) {
124 case 0x80:
125 revision = read_arbitary(pb);
126 av_log (s, AV_LOG_DEBUG, "revision (element 0x80) set to 0x%08x\n", revision);
127 break;
128 case 0x82:
129 ea->num_channels = read_arbitary(pb);
130 av_log (s, AV_LOG_DEBUG, "num_channels (element 0x82) set to 0x%08x\n", ea->num_channels);
131 break;
132 case 0x83:
133 compression_type = read_arbitary(pb);
134 av_log (s, AV_LOG_DEBUG, "compression_type (element 0x83) set to 0x%08x\n", compression_type);
135 break;
136 case 0x84:
137 ea->sample_rate = read_arbitary(pb);
138 av_log (s, AV_LOG_DEBUG, "sample_rate (element 0x84) set to %i\n", ea->sample_rate);
139 break;
140 case 0x85:
141 ea->num_samples = read_arbitary(pb);
142 av_log (s, AV_LOG_DEBUG, "num_samples (element 0x85) set to 0x%08x\n", ea->num_samples);
143 break;
144 case 0x8A:
145 av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
146 av_log (s, AV_LOG_DEBUG, "exited audio subheader\n");
147 inSubheader = 0;
148 break;
149 case 0xA0:
150 revision2 = read_arbitary(pb);
151 av_log (s, AV_LOG_DEBUG, "revision2 (element 0xA0) set to 0x%08x\n", revision2);
152 break;
153 case 0xFF:
154 av_log (s, AV_LOG_DEBUG, "end of header block reached (within audio subheader)\n");
155 inSubheader = 0;
156 inHeader = 0;
157 break;
158 default:
159 av_log (s, AV_LOG_DEBUG, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
160 break;
161 }
162 }
163 break;
164 case 0xFF:
165 av_log (s, AV_LOG_DEBUG, "end of header block reached\n");
166 inHeader = 0;
167 break;
168 default:
169 av_log (s, AV_LOG_DEBUG, "header element 0x%02x set to 0x%08x\n", byte, read_arbitary(pb));
170 break;
171 }
172 }
173
174 switch (compression_type) {
175 case 0: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
176 case 7: ea->audio_codec = CODEC_ID_ADPCM_EA; break;
177 case -1:
178 switch (revision) {
179 case 1: ea->audio_codec = CODEC_ID_ADPCM_EA_R1; break;
180 case 2: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
181 case 3: ea->audio_codec = CODEC_ID_ADPCM_EA_R3; break;
182 case -1: break;
183 default:
184 av_log(s, AV_LOG_ERROR, "unsupported stream type; revision=%i\n", revision);
185 return 0;
186 }
187 switch (revision2) {
188 case 8: ea->audio_codec = CODEC_ID_PCM_S16LE_PLANAR; break;
189 case 10: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
190 case 16: ea->audio_codec = CODEC_ID_MP3; break;
191 case -1: break;
192 default:
193 av_log(s, AV_LOG_ERROR, "unsupported stream type; revision2=%i\n", revision2);
194 return 0;
195 }
196 break;
197 default:
198 av_log(s, AV_LOG_ERROR, "unsupported stream type; compression_type=%i\n", compression_type);
199 return 0;
200 }
201
202 if (ea->sample_rate == -1)
203 ea->sample_rate = revision==3 ? 48000 : 22050;
204
205 return 1;
206 }
207
208 /*
209 * Process EACS sound header
210 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
211 */
212 static int process_audio_header_eacs(AVFormatContext *s)
213 {
214 EaDemuxContext *ea = s->priv_data;
215 ByteIOContext *pb = s->pb;
216 int compression_type;
217
218 ea->sample_rate = ea->big_endian ? get_be32(pb) : get_le32(pb);
219 ea->bytes = get_byte(pb); /* 1=8-bit, 2=16-bit */
220 ea->num_channels = get_byte(pb);
221 compression_type = get_byte(pb);
222 url_fskip(pb, 13);
223
224 switch (compression_type) {
225 case 0:
226 switch (ea->bytes) {
227 case 1: ea->audio_codec = CODEC_ID_PCM_S8; break;
228 case 2: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
229 }
230 break;
231 case 1: ea->audio_codec = CODEC_ID_PCM_MULAW; ea->bytes = 1; break;
232 case 2: ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_EACS; break;
233 default:
234 av_log (s, AV_LOG_ERROR, "unsupported stream type; audio compression_type=%i\n", compression_type);
235 }
236
237 return 1;
238 }
239
240 /*
241 * Process SEAD sound header
242 * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
243 */
244 static int process_audio_header_sead(AVFormatContext *s)
245 {
246 EaDemuxContext *ea = s->priv_data;
247 ByteIOContext *pb = s->pb;
248
249 ea->sample_rate = get_le32(pb);
250 ea->bytes = get_le32(pb); /* 1=8-bit, 2=16-bit */
251 ea->num_channels = get_le32(pb);
252 ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_SEAD;
253
254 return 1;
255 }
256
257 static int process_video_header_mdec(AVFormatContext *s)
258 {
259 EaDemuxContext *ea = s->priv_data;
260 ByteIOContext *pb = s->pb;
261 url_fskip(pb, 4);
262 ea->width = get_le16(pb);
263 ea->height = get_le16(pb);
264 ea->time_base = (AVRational){1,15};
265 ea->video_codec = CODEC_ID_MDEC;
266 return 1;
267 }
268
269 static int process_video_header_vp6(AVFormatContext *s)
270 {
271 EaDemuxContext *ea = s->priv_data;
272 ByteIOContext *pb = s->pb;
273
274 url_fskip(pb, 16);
275 ea->time_base.den = get_le32(pb);
276 ea->time_base.num = get_le32(pb);
277 ea->video_codec = CODEC_ID_VP6;
278
279 return 1;
280 }
281
282 /*
283 * Process EA file header
284 * Returns 1 if the EA file is valid and successfully opened, 0 otherwise
285 */
286 static int process_ea_header(AVFormatContext *s) {
287 uint32_t blockid, size = 0;
288 EaDemuxContext *ea = s->priv_data;
289 ByteIOContext *pb = s->pb;
290 int i;
291
292 for (i=0; i<5 && (!ea->audio_codec || !ea->video_codec); i++) {
293 unsigned int startpos = url_ftell(pb);
294 int err = 0;
295
296 blockid = get_le32(pb);
297 size = get_le32(pb);
298 if (i == 0)
299 ea->big_endian = size > 0x000FFFFF;
300 if (ea->big_endian)
301 size = bswap_32(size);
302
303 switch (blockid) {
304 case ISNh_TAG:
305 if (get_le32(pb) != EACS_TAG) {
306 av_log (s, AV_LOG_ERROR, "unknown 1SNh headerid\n");
307 return 0;
308 }
309 err = process_audio_header_eacs(s);
310 break;
311
312 case SCHl_TAG :
313 case SHEN_TAG :
314 blockid = get_le32(pb);
315 if (blockid == GSTR_TAG) {
316 url_fskip(pb, 4);
317 } else if ((blockid & 0xFFFF)!=PT00_TAG) {
318 av_log (s, AV_LOG_ERROR, "unknown SCHl headerid\n");
319 return 0;
320 }
321 err = process_audio_header_elements(s);
322 break;
323
324 case SEAD_TAG:
325 err = process_audio_header_sead(s);
326 break;
327
328 case MVIh_TAG :
329 ea->video_codec = CODEC_ID_CMV;
330 ea->time_base = (AVRational){0,0};
331 break;
332
333 case kVGT_TAG:
334 ea->video_codec = CODEC_ID_TGV;
335 ea->time_base = (AVRational){0,0};
336 break;
337
338 case mTCD_TAG :
339 err = process_video_header_mdec(s);
340 break;
341
342 case MPCh_TAG:
343 ea->video_codec = CODEC_ID_MPEG2VIDEO;
344 break;
345
346 case pQGT_TAG:
347 case TGQs_TAG:
348 ea->video_codec = CODEC_ID_TGQ;
349 break;
350
351 case pIQT_TAG:
352 ea->video_codec = CODEC_ID_TQI;
353 break;
354
355 case MVhd_TAG :
356 err = process_video_header_vp6(s);
357 break;
358 }
359
360 if (err < 0) {
361 av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
362 return err;
363 }
364
365 url_fseek(pb, startpos + size, SEEK_SET);
366 }
367
368 url_fseek(pb, 0, SEEK_SET);
369
370 return 1;
371 }
372
373
374 static int ea_probe(AVProbeData *p)
375 {
376 switch (AV_RL32(&p->buf[0])) {
377 case ISNh_TAG:
378 case SCHl_TAG:
379 case SEAD_TAG:
380 case SHEN_TAG:
381 case kVGT_TAG:
382 case MADk_TAG:
383 case MPCh_TAG:
384 case MVhd_TAG:
385 case MVIh_TAG:
386 return AVPROBE_SCORE_MAX;
387 }
388 return 0;
389 }
390
391 static int ea_read_header(AVFormatContext *s,
392 AVFormatParameters *ap)
393 {
394 EaDemuxContext *ea = s->priv_data;
395 AVStream *st;
396
397 if (!process_ea_header(s))
398 return AVERROR(EIO);
399
400 if (ea->video_codec) {
401 /* initialize the video decoder stream */
402 st = av_new_stream(s, 0);
403 if (!st)
404 return AVERROR(ENOMEM);
405 ea->video_stream_index = st->index;
406 st->codec->codec_type = CODEC_TYPE_VIDEO;
407 st->codec->codec_id = ea->video_codec;
408 st->codec->codec_tag = 0; /* no fourcc */
409 st->codec->time_base = ea->time_base;
410 st->codec->width = ea->width;
411 st->codec->height = ea->height;
412 }
413
414 if (ea->audio_codec) {
415 /* initialize the audio decoder stream */
416 st = av_new_stream(s, 0);
417 if (!st)
418 return AVERROR(ENOMEM);
419 av_set_pts_info(st, 33, 1, ea->sample_rate);
420 st->codec->codec_type = CODEC_TYPE_AUDIO;
421 st->codec->codec_id = ea->audio_codec;
422 st->codec->codec_tag = 0; /* no tag */
423 st->codec->channels = ea->num_channels;
424 st->codec->sample_rate = ea->sample_rate;
425 st->codec->bits_per_coded_sample = ea->bytes * 8;
426 st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
427 st->codec->bits_per_coded_sample / 4;
428 st->codec->block_align = st->codec->channels*st->codec->bits_per_coded_sample;
429 ea->audio_stream_index = st->index;
430 ea->audio_frame_counter = 0;
431 }
432
433 return 1;
434 }
435
436 static int ea_read_packet(AVFormatContext *s,
437 AVPacket *pkt)
438 {
439 EaDemuxContext *ea = s->priv_data;
440 ByteIOContext *pb = s->pb;
441 int ret = 0;
442 int packet_read = 0;
443 unsigned int chunk_type, chunk_size;
444 int key = 0;
445 int av_uninit(num_samples);
446
447 while (!packet_read) {
448 chunk_type = get_le32(pb);
449 chunk_size = (ea->big_endian ? get_be32(pb) : get_le32(pb)) - 8;
450
451 switch (chunk_type) {
452 /* audio data */
453 case ISNh_TAG:
454 /* header chunk also contains data; skip over the header portion*/
455 url_fskip(pb, 32);
456 chunk_size -= 32;
457 case ISNd_TAG:
458 case SCDl_TAG:
459 case SNDC_TAG:
460 case SDEN_TAG:
461 if (!ea->audio_codec) {
462 url_fskip(pb, chunk_size);
463 break;
464 } else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR ||
465 ea->audio_codec == CODEC_ID_MP3) {
466 num_samples = get_le32(pb);
467 url_fskip(pb, 8);
468 chunk_size -= 12;
469 }
470 ret = av_get_packet(pb, pkt, chunk_size);
471 if (ret < 0)
472 return ret;
473 pkt->stream_index = ea->audio_stream_index;
474 pkt->pts = 90000;
475 pkt->pts *= ea->audio_frame_counter;
476 pkt->pts /= ea->sample_rate;
477
478 switch (ea->audio_codec) {
479 case CODEC_ID_ADPCM_EA:
480 /* 2 samples/byte, 1 or 2 samples per frame depending
481 * on stereo; chunk also has 12-byte header */
482 ea->audio_frame_counter += ((chunk_size - 12) * 2) /
483 ea->num_channels;
484 break;
485 case CODEC_ID_PCM_S16LE_PLANAR:
486 case CODEC_ID_MP3:
487 ea->audio_frame_counter += num_samples;
488 break;
489 default:
490 ea->audio_frame_counter += chunk_size /
491 (ea->bytes * ea->num_channels);
492 }
493
494 packet_read = 1;
495 break;
496
497 /* ending tag */
498 case 0:
499 case ISNe_TAG:
500 case SCEl_TAG:
501 case SEND_TAG:
502 case SEEN_TAG:
503 ret = AVERROR(EIO);
504 packet_read = 1;
505 break;
506
507 case MVIh_TAG:
508 case kVGT_TAG:
509 case pQGT_TAG:
510 case TGQs_TAG:
511 key = PKT_FLAG_KEY;
512 case MVIf_TAG:
513 case fVGT_TAG:
514 url_fseek(pb, -8, SEEK_CUR); // include chunk preamble
515 chunk_size += 8;
516 goto get_video_packet;
517
518 case mTCD_TAG:
519 url_fseek(pb, 8, SEEK_CUR); // skip ea dct header
520 chunk_size -= 8;
521 goto get_video_packet;
522
523 case MV0K_TAG:
524 case MPCh_TAG:
525 case pIQT_TAG:
526 key = PKT_FLAG_KEY;
527 case MV0F_TAG:
528 get_video_packet:
529 ret = av_get_packet(pb, pkt, chunk_size);
530 if (ret < 0)
531 return ret;
532 pkt->stream_index = ea->video_stream_index;
533 pkt->flags |= key;
534 packet_read = 1;
535 break;
536
537 default:
538 url_fseek(pb, chunk_size, SEEK_CUR);
539 break;
540 }
541 }
542
543 return ret;
544 }
545
546 AVInputFormat ea_demuxer = {
547 "ea",
548 NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia Format"),
549 sizeof(EaDemuxContext),
550 ea_probe,
551 ea_read_header,
552 ea_read_packet,
553 };
ffmpeg Lagarith lossless decoder